GIRClosure::find_signal_callable_info question

[romgrk]

node-gir/src/closure.cpp

Lines 70 to 75 in 109efbd

	GIRInfoUniquePtr GIRClosure::find_signal_callable_info(guint signal_id, char *signal_name) {
	// given a signal ID we want to find the GICallableInfo metadata so that
	// we can know the param types & return types when marshalling data between
	// the native callback and the JS callback.
	// Note: this can return nullptr when the signal doesn't have a registered
	// GICallableInfo. This happens notably for `notify::<property>` signals.

Here, wouldn't it be better to just use the part before :: to find the signal name?
E.g. if passed notify::label, just look for the signal called notify?